Register controlled auto-stop valve



May 16, 1950 c. s. HAZARD REGISTER CONTROLLED AUTO-STOP VALVE 3Sheets-Sheet 1 Filed March 19, 1945 INVENTOR. (ltqrles .5. Hazard flTTORNE Y May 16, 1950 c; s. HAZARD REGISTER comormn AUTO-STOP VALVE 3Sheets-Sheet 2 Filed March 19. 1945 [NV TOR. [liar/ls 6'. [la zard BY IHTTORNEY y 1950 c. s. HAZARD 2,508,064

REGISTER conmouso AUTO-STOP VALVE Filed March 19, 1945 3 Sheets-Sheet 3E; N 5 a N N Q N 3 .JN 8 g g 0 Q s N :3

INVENTOR fharles 5. Hazard BY/Q'VVAW IITTORNEY Patented May is, 1950REGISTER CONTROLLED AUTO-STOP VALVE Charles S. Hazard, Andover, N. J.,assignor to Neptune Meter Company, a corporation of New JerseyApplication March 19, 1945, Serial No. 583,429

10 Claims.

This invention relates to fluid control valves and more especially tofluid control valves which are biased to the closed position to stopflow of the fluid.

In valves of this type, it is desirable for many purposes, for examplein the dispensing of a fluid such as gasoline or in controlling flow ofother liquids, to deliver the fluid under the control of the valve at arelatively high rate during the major portion of the time of flownecessary to deliver a desired quantity. As the delivery approachescompletion, it is then desirable to reduce the rate of flow in orderthat accurate measurement of the fluid delivered may be more easilyaccomplished. This result, in many instances, is attained by handoperation of an ordinary valve, first to reduce and then to stop flow,but experience shows that such hand operation is unreliable because ofcarelessness or lack of attention, or the inability of the operator towatch the meter and quickly operate the valve to closed positionprecisely on completion of the amount to be delivered. In many cases, itis desirable or necessary, therefore, that exact measurement of thefluid dispensed or controlled be secured by automatically effectingclosure of the valve and precise cut-oil of the flow at the instant ofcompleting the desired measurement.

It is an object of the invention to provide means which may be combinedwith a valve of ordinary construction and which is operable to effectclosing movement of the valve, this means being constructed so that, ifdesired, it may be operated upon the occurrence of a predeterminedcondition which, for example, may be a condition related to the fluidflow.

It is a further object of the invention to provide means which may becombined with a Valve of ordinary construction to produce such closingmovement of the valve, if desired, upon the occurrence of such apredetermined condition, and which is thereafter operable to interruptsaid movement to maintain said valve partially open.

It is a still further object of the invention to provide a valvestructure in which means are provided to restrain said valve in openposition during normal flow which is operable to effect initial closingmovement of the valve to a partly open position upon the occurrence of apredetermined condition and thereafter, upon the occurrence of a secondpredetermined condition, is operable to effect full closure of thevalve.

It is also an object of the invention to provide in combination with thedevices of the invention above referred to, means for opening the 2valve by hand which thereafter, upon the occurrence of one Or both ofsaid predetermined conditions. may be efiective automatically to operatethe valve for said closing movement or movements thereof.

It is a particular object of the invention to provide devicesfunctioning as above mentioned in combination with a fluid control valvewhich may be controlled by a, register of auto-stop type or othercontrol means so that, upon completion of registration of apredetermined number of units, partial closure of the valve may beeffected and, upon return of the auto-stop register to zero, fullclosure of the valve may be secured to complete the delivery of thequantity of fluid represented by said predetermined number of units.

The invention in certain of its aspects may be applied to a valvestructure in which the opening and closing movement of the valve iseffected by rotational movement of a stem or shaft. It also isapplicable to valves of the type in which the opening and closingmovement of the valve is effected by lengthwise movement of a stem towhich the valve is operatively connected and the invention will bedescribed in connection with such a, valve as the preferred embodiment.

It is a feature of the invention that there are provided two significantoperating parts, which will be referred to as a member M and a body 3,which are supported to be movable relative to each other and each ofwhich is provided with a cam surface which is arranged operatively toengage a common cam follower. Relative movement of the member and thebody is produced by means associated therewith in order to effectmovement of the follower along the cam surfaces. The cam follower isoperatively connected to the valve and the requisite movement thereof toproduce opening and closing movement of the valve is secured as saidfollower is moved along both said cam surfaces in one direction or theother under the camming action of said cooperating surfaces.

It is an important feature of the invention that one of said parts, forexample, the member M, i arranged to be restrained in a positioncorresponding to the open position of the valve by restraining meanswhich is actuatable, after said member takes its restrained position, torelease said member, thereby to produce camming action on the camfollower to effect closing movement of the valve. The body B is arrangedto be movable relative to said member M when so restrained so as toproduce the camming action on said cam 3 follower above referred to, inorder to efiect the opening movement of the valve. Means are providedfor holding said body B in the position corresponding to the openposition of the valve. In a valve structure which is provided with meansto bias the valve to its closed movement, both said member M sorestrained and said body 13 so held thus are maintained in theirrespective positions corresponding to the open position of the valveagainst the bias of said bias means. Release oi said member M, as aboveindicated, enables the bias means to produce the closing movement of thevalve as well as the cammlng action which is effective to move themember M reversely relative to the body B which is still held by itsholding means.

The means for restraining the member M above referred to also may beconstructed to intercept this reverse movement of the member relative tothe body B, thus to interrupt the movement of the valve toward itsclosed position and so as to hold this valve in partially open position.

The invention will be described in connection with the drawings relatingto an embodiment thereof in a valve of the so-called globe type in whichthe valve is operatively connected to a valve stem moving lengthwise ofitself through a stuffing box, the valve seat lying in a planeperpendicular to the length of the stem. In the drawings:

Fig. 1 is a vertical section of a valve embodying the invention;

Fig. 2 is a horizontal section on line 2-2 of Fig. 1;

Figs. 3, 4 and 5 are diagrammatic illustrations showing the operativerelation of the member and body carrying the camming surfaces.

Fig. 6 is a diagrammatic showing of the valve of the invention connectedto an auto-stop register.

In Fig. 1 within the body of a valve of conventional globe type thevalve seat 3 surrounding the valve opening 4 is formed in the transversewall 5 which separates the space within the valve body into the passage1 leading to the port 8. The valve will ordinarily be arranged in thepipe so that the port 8 is the outlet of the valve. The inlet, not shownin Fig. 1, communicates in the usual manner with the passage 9 so thatthe pressure under which the fluid is delivered is brought upon thevalve disc and tends to hold the valve closed. The disc II is providedwith a hard rubber washer l2 for seating against the seat 3. The washerI2 is held in place in the disc H by lock-nut |3 threaded on the hub Mof the valve disc II. a plurality of guide legs |5 extendin parallel tothe valve axis which slidably fit to the bore of the valve opening 4.The valve disc II is biased to closed position against the seat 3 byhelical spring l6 bearing against the valve bonnet H.

The hub I4 of the disc is provided with a cylindrical bore to which isfitted a sliding spider 22 provided with a plurality ofcircumferentially spaced vertical ribs or legs 2| which bear on theinner surface of the cylindrical bore 20. This spider may be formed atits lower end with a cylindrical head 23 which fits to the bore 20 whenthe spider is in its uppermost position. In this position a valve disc25 provided with a washer 26 seats upon the annular valve seat 28 formedas part of the valve disc II on the underside thereof and extendingabout the bore 20. The spider 22 may be provided with a stud extension30 threaded into a spindle 32 to which the valve disc 25 is attached.The spindle 32 is fitted to The lock-nut I3 is provided with 5 slide inthe bore 34 of a hub 35 formed as part of the bonnet I! so as to guidethe valve 25 to and from its seating position on the seat 28.

Attached to the upper end of the spider 22 to move therewith is aretainer 31 provided with a plurality of spaced prongs. This retainerserves to hold a helical compression spring 38 under compression againstthe lock-nut |3 so as to bias the valve 25 to closed position againstthe annular seat 28. Under this bias the spider 22 and the head 23 slideupwardly in the bore 20. To limit downward sliding movement of thespider 22 and head 23 and, therefore, the opening of the valve 25, thespider legs 2| are provided with lugs 39 so positioned thereon that thevalve 25 may be moved oiT the seat 28 until the lower end of the lugs 39reaches the upper end of the hub H of the valve disc I I. It will beapparent that such movement of the valve 25 from its seat 28 willproduce opening of the passageway 9 to the space between the legs 2| ofthe spider 22 when the cylindrical head 23 has been moved downwardlybeyond the seat 28. The position of the lugs 39 is such as to permitsufllcient movement of the head 23 beyond the seat 28 to produce an areaof valve opening for flow of the fluid therethrough and through the bore20 into the passage I at a substantial but preferably at a limited rate.

Valve stem 5| is slidably arranged in the bore 44 of the hub extensions45 and 46 formed on the upper portion of the valve body I. The stem alsoextends through a stuflfing box of conventional type comprising packing41, gland 43 and nut 49 threaded on hub 46. Movement of the stem 5|lengthwise thereof may occur concomitantly with movement of the spider22 and of the valve 25 to and from its seat 28. Movement of this stemalso may be concomitant with movement of the valve II to and from itsseat 3 when the lugs 39 are in contact with the hub ll of the valve discII, the spider 22 and the pronged retainer 31, and the valve M thenmoving to-. gether. It will be apparent that when the valve stem 5|, thelower end of which is in contact with the upper face of the prongedretainer 31, is forced downwardly this retainer and the spider 22 aremoved downwardly against the bias of the compression spring 38 until thelugs 39 come into contact with the hub M. This forces the valve 25 fromits seat. Further downward pressure by the stem 5| then forces the valvedisc II from its seat 3 against the bias of the spring I6. When thedownward pressure of the valve stem 5| is removed the valve disc I isfirst moved upwardly by the spring l6 until its washer I2 is broughtinto contact with the seat 3. Thereafter the spring 38 acting againstthe pronged retainer 31 moves the spider 22 and valve 25 upwardly untilthe washer 26 of valve 25 comes in contact with the seat 28. It will beapparent, therefore, that such endwise movement of the valve stem 5| inthe closing operation of the valve first produces a substantialreduction in the flow of the fluid by closing off the main valve opening4 but maintains the small valve 25 open to provide a reduced area offlow, thereby limiting the flow of the fluid to the extent which may bedetermined by the position of the lugs 39 in relation to the hub l4 andin relation to the valve 25 and its washer 29, as well as to the lengthof the head 23.

In the particular embodiment of the invention illustrated in thedrawing, for the purpose of effecting lengthwise movement of the stemII, in contact with the upper end of said stem is a cylindrical disc 55slidably fitted to the inner surface or a cylindrical shell 51 which maybe closed at the upper end and is arranged concentric with the axis ofthe stem II and of the valve. Burrounding the shell I! and concentrictherewith is the shell I! which may be closed at its upper end and whichat its lower end is formed with a flange ll extending about thecircumference of said shell. The lower end of said shell I. is machinedto flt to and bear upon the upper machined face of a similar flange 03of the shell 51. A retaining ring 85 extends about the flange I andbears upon the upper face of said flange Ci to retain the shell 59 inplace, the shell II in turn serving to retain the shell ll in place. Thering 45 may be suitably fitted to and fastened by means of bolts 81 to abracket 88 fitted to the turned portion of hub 46 so that the bracket 48may be swung ito different positions angularly about the axis of thevalve and of valve stem II. The bracket 68 may be clamped in place bymeans of nut 48 threaded upon the hub extension 46. The lower face ofthe bracket 46 bears against the surface 49 turned on the hub 43provided on the body i. Although the bracket 68 may be clamped tight inposition and the ring 65 is fixed thereto, the shells 51 and 59 are sofitted respectively to the upper surface 69 of the bracket 68 and to theupper surface of the flange 83 as well as to the ring 65 that theseshells may be rotated upon their common axis relative to the valve andits valve stem as well as relative to each other.

Attached to or formed as part of the shell 59 is the laterally extendinghandle Iii provided with downwardly extending hub 12 which carries inits bore II the detent l5 slidable in said bore I3. Connected to thedetent I5 is the rod 11, shown in dotted outline, which is connected atits upper end by means of pin 18 to the lever 19 pivoted on.

pin 80 held in brackets ll formed on the arm ll. The lever I9 extendsbeyond the brackets 8| toward the right to an endpiece l2 convenientlyrelated to the handle 83 at the end of the arm 10. Pressure downwardlyupon the endpiece 82 moves the detent I5 upwardly in the bore 13 againstthe bias of the spring 16 within the hub 12. This upward movement liftsthe detent from the position shown in Fig. 1 out of engagement withsocket 84 in the hub 85 formed on the ring 65. While continuing thepressure on the endpiece i2 and holding handle 83, the outer shell 59may be rotated by hand on its axis, the arm ll moving in angularrelation to the valve about the axis thereof, as may be understood fromFig. 2.

The ring 85 is provided with a boss 90 in which is fastened pin 9| asshown in Fig. 2. The shell 59 is provided with lugs 93 and 94 whichengage pin 9| to limit the rotational movement of the shell 59 as wellas the angular movement of the arm 10. When the endpiece 82 has beenpressed in order to lift the detent I! as above described, the arm Illmay be swung into the position shown in Fig. 2 with the lug 93 againstthe pin 9|. By swinging the arm II in the clockwise direction, that is,downwardly on the sheet in Fig. 2, the lug 94 is brought into engagementwith the pin iii. In the arrangement illustrated in Fig. 2 this angularmovement of arm II is about 60. When the lug 94 is in engagement withthe pin St, the detent 15 may be dropped into the socket 84 in the hub85 by releasing the lever 18, the spring 16 forcing the detent into saidsocket. The outer shell 59 then is held in the position to which it hasthus been moved concomitantly with the angular movement of arm 10.

In the wall of shell 51 are formed grooves I00 at opposite sides of theaxis of the shell, extending parallel to said axis. Mounted on studs I02threaded in the periphery of disc II at owoeite sides of the axis aretwo sets of rollers I" and Ill separated by washers I04. The rollers andstuds are so arranged that the rollers I" engage the grooves I00 and maymove lengthwise along said grooves when the disc ll moves in thedirection parallel to the axis of the valve. Such movement of the discII will occur concomitantly with lengthwise movement of the valve stemii. Such lengthwise movement of the rollers I along grooves Illl mayoccur either when the shell ll is stationary or when it is in rotationalmovement, as will be hereafter explained. In the latter case. however,since the rollers II. are within the grooves I00, the disc 55 and therollers rotate with the shell 51, the disc 55 being provided with theconcave surface 56 engaged by the upper end of valve stem 5| whichpermits the disc I! to rotate relative to the-valve stem Ii on the axisthereof. It will be apparent that the disc 55 is biased to the upper endof the shell 51 by the springs II and 38 acting through the parts abovedescribed and through the valve stem 5|.

In the wall of the outer shell II are formed grooves H0 at oppositesides of the axis of the shell the surfaces of which engage the rollersi". In the particular embodiment being described these grooves H0 extendhelically in the cylindrical wall constituted by the shell II. 1 Thesehelical grooves have an extent, therefore, along the length of the shellparallel to the axis thereof and have, as well, an extentcircumferentially of the shell 59. The extent lengthwise of the axis issubstantially the same as the length of the grooves I00 in shell 61.

The action of the two cam surfaces provided by the grooves"! and Ill inengagement respectively with the rollers Ill and I will be betterunderstood from consideration of Figs. 3, 4 and 5. These figures show indiagrammatic form the three positions of the "member M, corresponding tothe shell '1, and the body" 13, corresponding to the shell I, as abovereferred to. The shell 51 or member M is represented by the rectangle soidentified, the groove ill being shown in dotted outline. In the outershell N or body B, represented by rectangle I9, overlapping the member Mis formed the inclined groove H0. The member M and the body B thusconstitute in Figs. 3, 4 and 5 developed portions of the shells 51 and54 and their grooves Ill and iii of Figs. 1 and 2. The groove Illextends at at angle of 45" to the horizontal and to the vertical.Camming action produced by movement of the body B relative to the memberM thus may be secured with full advantage in either direction of saidrelative movement. The cross-sectioned circle identified in Figs. 3, 4and 5 with the numerals Hit-408 represents diagrammatically rollers Hi6and NI.

Fi 3 represents the position of the two shells when the valve is closed,the rollers Ill and I", therefore, being in the upper extremity of bothgrooves I00 and H0. Assuming that the handle 10 is in the position withthe detent l5 engaging the socket 84 in the hub l5 and the valve isclosed, pressure on the endpiece 02 of lever I! will lift the detent 15from the socket and the arm I8 may be moved to the position shown inFig. 2. In such angular movement of the arm ll both the shells 51 and 59are rotated therewith through the same angle, the disc 55 rotating onthe end of the valve stem 5|. Restraining means hereinafter to bedescribed then engages the shell 51 to hold it in the position to whichit has been asoaoee moved. The relation of the two shells, that is ofthe member M and body 3 to each other, and therefore of the rollersthereto remains that illustrated in Fig. 3 during this movement.

After the shell 51 has reached the position in which it is restrained,the arm Il may be moved clockwise through the angle of 60 from theposition in which it is shown in Fig. 2 and the detent Il may be droppedinto the socket 84 by release of the lever 18. In such movement of thearm which corresponds to movement of the body B in the direction of thearrow shown in Fig. 3, the member M being stationary, the body-B ismoved to the position shown in Fig. 4. Camming action occurs between thegroove III and the rollers represented by the circle llti0l which aremoved to the position at the bottom of both grooves, as shown in Fig. 4.It will be apparent that this downward movement of the circle ll6l Illcorresponds to opening movement oi! the valve as above described inconnection with Fig. 1. When, in the manner hereinafter to be described,the inner shell 51 is released for rotational movement, the rollersrepresented by the circle HIS-Ill! may again move vertically, theserollers being biased upwardly as above stated, the circle Iii-ll. movingalong the incline of groove H0 in the body B. Since the outer shell is,that is the body B in Fig. 4, is held against movement, upward movementof the rollers represented by the circle IIG-Ill occurs only uponrotational movement of the inner shell 51 represented by movement of themember M in the direction of the arrow as shown in Fig. 5. This figuremay be taken as representing the relation of the shells 51 and 58 at atypical moment in the movement of the inner shell 51 in the clockwisedirection, that is in the direction reverse to that in which it wasmoved by swinging the arm III to the position shown in F18. 2.

In order to restrain the inner shell ll after it has been rotated,counter-clockwise in Fig. 2, together with the outer shell it prior toopening the valve, the flange 08 of the inner shell l'l may be providedas shown in Fig. 2 with a ratchet tooth I2l engaged by pawl I22supported pivotally on fixed pin I24 held in bracket extension I26formed as part of the bracket N. The pawl I22 extends on the oppositeside of the pivot pin I24 from the point of the pawl and engages as alink a pin I28 fastened in an extension of the armature core III of asolenoid I32.

Also pivoted on pin IN is a hooked pawl I", the hook of which ispositioned to engage ratchet tooth I2I also formed on the flange 62 ofthe inner shell 51. Such engagement of pawl I36 with ratchet tooth I2Ioccurs after the pawl I22 has been disengaged from tooth I", the shell51 rotating as above described in a clockwise direction in Fig. 2 underthe bias of springs IO and 30. The pawl I20 extends on the opposite sideof the pivot pin I24 from the hook and engages as a link a pin It!fastened in an extension of the core I of a solenoid I42.

By means of a torsion spring I" wound about a stud I82 fastened in thebracket extension I26, the ends I" and I of this spring engagingrespectively the pins I20 and ill,the pawls I22 and I" are biased topositions out of engagement with the ratchet teeth I20 and I. The springill effects this disengagement of the pawls I 22 and I" and release ofthe shell I1 in two steps respectively when the solenoids I I2 and I42are deenergized.

Buch deenergization may be effected upon the occurrence of a selectedcondition. For example, the solenoid I82 maybe deenergiaed when saidsolenoid is connected in a circuit which includes a switch under controlof an auto-stop register, such as is used in registering the dispensingof gasoline, said switch being actuated when the auto-stop registerreturns to a predetermined position, for example, when all but 10 unitsof registration have been completed. The solenoid I02 may be connectedin a similar circuit with a switch actuated by said auto-stop registerwhen said register returns to zero. Under such conditions the solenoidI32 when deenergized will effect release of the shell II which will thenrotate until the tooth I is engaged by the hook of the pawl I" whicharrests the rotational movement of said shell and, therefore. theclosing movement of the valve. Deenergization of the solenoid I42releases the hook I" from the ratchet tooth Hi to permit the shell 51again to rotate under the bias of the valve spring I.

The angle through which the shell 51 rotates after release from pawlI22, that is, from the position to which the shell is initially moved tothe position with the ratchet tooth I in engagement with the hook oi thepawl I, may be such as to exactly correspond with closing movement ofthe main valve II in Fig. 1, the lugs ll remaining in contact with theend of the hub I4 and maintaining the valve 25 open. This angle, ifdesired, however, may be such as will I hold the valve II partially openor, on the other hand, it may be such that the valve 25 is moved partway toward its closed position It. In any case the subsequent release ofthe shell Bl by disengagement of the hook of the pawl II from theratchet tooth I2I permits further rotational movement of the shell 51and full closing movement of the valve 25 to stop flow of the fluidthrough the valve.

The rotational movement of the shell II which brings the tooth I2I intoengagement with the hook of the pawl I38 may be represented by themovement of the member M from the position in Fig. 4 to the position inFig. 5 showing the relative positions of the member M and body Bcorresponding to the partially open position of the valve, the circlel06i0l having moved part way up in both grooves I00 and H0. Furthermovement of the shell 51 after release of the tooth Hi from the pawlI38, may be represented by further movement of the member M in thedirection of the arrow in Fig. 5 to the position shown in Fig. 3, thecircle III$III8 moving further upwardly in both grooves. It thus will beapparent that the shells 51 and is have been returned to the positionfrom which in the above description they were initially moved by hand insetting the shell 51 to engage the pawl I22.

It will also be clear that the outer shell I, after the valve hasreturned to the fully closed position, will still [be held by the detent15, that is, in the position which is removed from the position of thearm It in Fig. 2. By releasing the detent and moving the arm Ill to theposition shown in Fig. 2, both shells 51 and 5! again will be rotated asabove described and the pawls I22 and I36, if the solenoid I32 and I42are energized, will be cammed against the pull of these solenoids inpassing the ratchet teeth I20 and I2i until pawl I22 engages ratchettooth I2. to hold the valve open.

In Fig. 6 is shown apparatus for operation of a valve constructed asabove described under control of an auto-stop register. The valve hasasoaoes 8 associated therewith solenoids I82 and I82 for operationthereof in the manner heretofore described. The auto-stop register I88comprises units wheel I82 having disc I88 attached thereto, tens wheelI88'having disc I88 attached thereto and wheels of higher order I 88 and1| having discs I18 and I12 respectively attached thereto. The discsattached to each wheel respectively are provided with notches orrecesses I82, I 88, I88 and I88 in the periphery/thereof. Said numeralwheels and discs are mounted on shaft I88 which may be rotated by hand,byrmeans of crank I", in presetting operation thereof and may be drivenduring integrating operation thereof by the worm I88 and worm gear I88,the worm being connected through suitable driving connections to theoperating element of a meter which measures the fluid flowingtherethrough.

Mounted on rod 288 held in frame members 2 and 288 which are connectedalso by rod 288 supported in bearings 288 are rollers 2I8, M2, 2respectively associated with the discs I88, I18, I12. The frame members28I, 288 together with rods 288, 288 form a rigid frame which isarranged for pivotal movement in the bearings 288 so that the rollers2I8, 2I2, 2 are moved outwardly simultaneously upon setting rotation ofone or more of the numeral wheels I 88, I88, "I under the camming actionof their respective discs I68, I18, I12. It will be apparent that all ofthe rollers 2I8, H2. 2 may enter their respective notches I84, I86, I88when said notches are all in line, the arrangement being such that thisoccurs when all of the numeral wheels respectively associated with thediscs I88, I18, I12 indicate a zero reading. When upon setting theregister by turning crank I8I or otherwise the numeral wheel I88, orthis wheel together with one or more wheels of higher order, is rotatedto a predetermined setting, the frame 2", 288 is pivoted downwardly andthe projection 2I8 of frame member 288 is moved upwardly into contactwith the switch arm 2I8 to close the contacts 228, one of these contactsbeing held on the fixed switch member 22I.

When the units wheel alone is set to a predetermined registration, theroller 288 only is cammed out of notch I82 to a position such as isshown in Fig. 6, this roller 288 being supported on bell crank lever 225pivotally supported at 228 and having upwardly extending arm 221. Whenthe roller 288 is cammed out of notch I82, the arm 221 closes contacts238 by moving the movable switch member 23I into contact with the fixedmember 282. Upon return of the notch I82 to the zero position, theroller 288 enters said notch and the bell crank lever 225 pivotsclockwise about the pivot support 226 to effect opening of the contacts288.

In order to prevent opening of the contacts 228 when the notch I82 inthe integrating operation passes zero upon the completion of each 10units, with a corresponding indexing of the tens wheel I66, a bar 2| 5is fastened to frame members 28I and 288 and extends over the bell crankarm 225. It will be apparent that if frame 28I, 283 is pivoted in acounter-clockwise direction by rotation of one or more of the numeralwheels I66, I68, HI and their respective discs I68, I18, I12, the bar 2I5 will move therewith and will hold the lever 226 down to preventclockwise movement about the pivot 228 of said bell crank lever 225,thus maintaining arm 221 pressing on switch member 23I to hold contacts280 in engagement.

Theoonteots 228 are'eonneetsdinserisswith solenoid I82 between a sourceof supply 288 and the ground at 288. The contacts 288 are connected inseries with the solenoid 2 between the supp y 288 and the ground at 288,these contacts 288 and solenoid I82 being in parallel with contacts 228and solenoid I 82. Upon return of the tens wheel and all numeral wheelsof higher order to zero position, the rollers 2|8, 2I2, 2 may entertheir respective notches I88, I88, I88 and the switch 228 may be opened,thereby deenerglzing the solenoid I82. Such deenergisation of thissolenoid as above described in connection with Fig. 2 will eifeotrelease of the ratchet tooth I 28 from the pawl I22, the parts in Fig. 6carrying the same numerals as in Fig. 2. The valve stem 6i, therefore,may be moved to effect partial closure of the valve, the tooth "I thencoming into engagement with the hook of the pawl I88. When the notch I82is brought into engagement with the roller 288 upon return of the unitswheel to zero, the bell crank lever 228 and the upward extension thereof221 are pivotally moved in a clockwise direction and the contacts 288are opened. This affects deenergization of the solenoid I82 to effectrelease of the ratchet tooth I2I from pawl I88 with concomitant fullclosure of the valve in the manner above described.

when both solenoids are thus deenergized, the spring I 88 thusmaintaining the pawls I22 and I88 out of engagement with the ratchetteeth I28, I2I, movement of the handle 18 of the valve to the positionshown in Fig. 2 and subsequent movement thereof through the angle of 60to bring the detent 18 into engagement with the socket 88 isineflfective to open the valve for the reason that the inner shell 61cannot be held in the position to which it is rotated because the pawlI22 cannot engage the ratchet tooth I28. It will be apparent that theauto-stop register thus connected to operate the valve, therefore, iseifective upon its return to zero position to prevent opening of thevalve and to prevent setting of the valve to the open position becausesuch setting of the valve cannot take place until the auto-stop registerhas been preset to a predetermined setting to effect energization of thesole noids. The valve, nevertheless, always will be closed immediatelyupon return of the auto-stop register to zero so that the flow of thefluid may be cut of! precisely upon completion of the last unitregistered by the auto-stop register.

Within the scope of the invention the pawls I22 and I36 may be operatedby other electrical or mechanical means in place of the solenoids I82and I42. Such means are disclosed in my copending application Serial No.584,969, filed March 26, 1945. Also within the scope of the invention asingle pawl, which may be represented by the pawl I22, may be usedengaging a single tooth such as tooth I28 on the flange of the shell 51so that full closure of the valve is secured in one movement instead ofin two steps as described in connection with the embodiment illustratedin the drawings. The invention,

moreover, is not limited to the particular embodiment illustrated butinclude devices which secure closing movement of the valve by theoperation of cam surfaces respectively carried by two parts, a memberand a body, represented in the illustrated embodiment by the shells 61and 88, arranged so that when moved relative to each other their cammingaction upon a cam follower produces a movement of translation of the camfollower as it moves along the cam surfaces. The movement of translationof the cam follower is utilized to effect opening movement of the valve.This movement of translation, moreover, may be transmitted to the valveto effect opening and closing thereof through any suitable mechanism,including those which will produce rotation of the valve stem in a valvedesigned for such rotational movement to accomplish the opening andclosing of the valve.

I claim:

1. The combination with an auto-stop register having a units wheel and awheel registering multiples of units, and a valve biased to closedposition, of means for holding said valve in open position against itsbias, means actuated by said wheel registering multiples of units forreleasing said valve from said holding means to effect closing movementthereof under its bias, means for intercepting said valve in its closingmovement to hold said valve partially open, means actuated by said wheelregistering units for effecting release of said valve to move under itsbias to the fully closed position, and means effective when said valveis thus released in closed position to prevent opening of said valve.

2. The combination with an auto-stop register having a units wheel and awheel registering multiples of units, and a valve biased to closedposition, of means for holding said valve in open position against itsbias, a switch actuated by said units wheel and a switch actuated bysaid wheel registering multiple units, a solenoid for each switchenergized and deenergized under control of its switch, means operativelyconnecting said solenoids with said valve holding mean to hold saidvalve partially open when only said switch actuated by said units wheeleffects energizatlon of said solenoid connected thereto and to hold saidvalve in full open position when said switch actuated by said multipleswheel effects energization of said solenoid connected thereto.

3. The combination according to claim 1 which comprise means effectivewhen both said solenoids are deenergized for preventing said valveholding means from holding said valve open.

4. The combination with a valve biased to closed position, and apresettable register, of means controlled by said register forrestraining said valve in open position against its bias when saidregister is in a position of setting other than zero and for releasingsaid valve to move to closed position under its bias when said registeris at zero, means operable when said restraining means is controlled bysaid register in said position of setting other than zero for movingsaid valve to open position, and means controlled by the register andeffective when said register is at zero for preventing said valve movingmeans from moving said valve to open position.

5. The combination with a valve biased to closed position, and apresettable register having a. units wheel and a numeral wheel of higherorder, of means controlled by said wheel of higher order for restrainingsaid valve in open position against its bias when said wheel of higherorder is in a position of setting other than zero and for releasing saidvalve to move toward closed position under its bias upon return of saidnumeral wheel of higher order to its zero position, means controlled bysaid units wheel for restraining said valve in partially open positionagainst its bias when said units wheel is in a position of setting otherthan zero and for releasing said valve to move to closed position underits bias upon return of said units wheel to zero position, meanseffective when at least said restraining means controlled by said unitswheel is controlled thereby in a position of setting of said wheel otherthan zero for moving said valve to open position, and means effectivewhen all said wheels of said register are at zero for preventing saidvalve moving means from moving said valve to open position.

6. The combination with a valve biased to closed position and apresettable register having a units wheel and a numeral wheel of higherorder, of means controlled by said wheel of higher order when said wheelof higher order is in a position of setting other than zero forconditioning said valve for opening and closing movemenfs thereofbetween closed position and fully open position, means controlled bysaid units wheel when said units wheel is in a position of setting otherthan zero for conditioning said valve for opening and closing movementsthereof between closed position and a partially open position, manuallyoperable means effective when said valve respectively is conditioned bythe settings of said wheel for producing the opening and closingmovements of said valve corresponding to said settings, said meanscontrolled by said wheels being effective when both of said wheels arein the zero position to prevent said manually operable means fromopening said valve.

7. In combination with a valve biased to closed position and apresettable register having a units wheel and a numeral wheel of higherorder, electrically actuated means associated with each of said wheelsand controlled respectively thereby for conditioning said valve foropening and closing movements thereof, said electrically actuated meanscontrolled by said wheel of higher order being effective to conditionsaid valve for full opening movement thereof, said electrically actuatedmeans controlled by said units wheel being effective to condition saidvalve for partial opening movement thereof, and manually operable meansoperatively connectible to said valve for effecting full and partialopening and closing movements thereof respectively when said valve isconditioned by settings of said wheel of higher order and said unitswheel to positions other than zero.

8. In combination with a valve biased to closed position and apresettable register having a units wheel and a numeral wheel of higherorder, electrically actuated means associated with each of said wheelsand controlled respectively thereby for conditioning said valve foropening and closing movements thereof, said electrically actuated meanscontrolled by said wheel of higher order being effective to conditionsaid valve for full opening movement thereof, said electrically actuatedmeans controlled by said units wheel being effective to condition saidvalve for partial opening movement thereof, and manually operable meansoperatively connectible to said valve to effect opening and closingmovements thereof when at least one of said electrically actuated meansis controlled to condition said valve for opening and closing movementsthereof, said manually operable means being prevented from suchoperative connection to said valve when neither of said electricallyactuated means is controlled so as to condition said valve for openingand closing movements thereof.

9. The combination with a valve biased to closed position, and apresettable register, of manually operable means, an element actuated toa given position by said register when said register is in a position 01setting other than zero and actuated by said register to an initialposition when said register is in the zero position, and meansoperatively connected to said element when said element is in said givenposition and when so connected cooperating with said element to providean operative connection between said manually operable member and saidvalve for effecting opening and closing movement of said valve uponoperation of said manually operable member, said element in said initialposition being disconnected from said connection means to disestablishthe operative connection between said manually operable member and saidvalve so as to prevent operation of said valve when said register is inthe zero position.

10. The combination with a valve biased to closed position, a registerhaving a normal position and movable therefrom to at least one activeposition, and a valve operating device, of a releasable mechanicalconnection between the valve and the operating device, said connectionincluding a lockable member and being effective when said member islocked to operatively connect the valve and the operating device so thatthe operating device can open the valve and effective when said memberis free to operatively disconnect the valve and the operating device sothat the operating device is prevented from opening the valve, a lockingmember movable between 14 a locking position wherein it locks saidlockable member and an unlocking position wherein said locking member isfree to move, and means controlled by the register for moving saidlocking member, said register-controlled means being effective when theregister is away from its normal position to move said locking member toits locking position so that the valve may then .be operated by theoperating device, and when the register is in its normal position tomove said locking member to its unlocking position so that the openingof the valve by the operating device is then prevented.

CHARLES S. HAZARD.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 305,595 Hughes Sept. 23, 1884397,260 Wellens Feb. 5, 1889 993,072 Jones May 23, 1911 1,001,409Jennings Aug. 22, 1911 1,996,944 Witter Apr. 9, 1935 2,228,820 Griflithet al Jan. 14, 1941 2,265,325 Steen Dec. 9, 1941 2,289,867 Berck July14, 1942 2,358,712 Hinds Sept. 19, 1944 Certificate of Correction PatentNo. 2,508,064 May 16, 1950 CHARLES S. HAZARD It is hereby certified thaterrors appear in the printed specification of the above numbered patentrequiring correction as follows:

Column 5, line 17, for ito read into; column 11, line 43, for the claimreference numeral 1 read 2;

and that the said Letters Patent should be read with these correctionstherein that the same may conform to the record of the case in thePatent Oifice.

Signed and sealed this 5th day of September, A. D. 1950.

[SEAL] THOMAS F. MURPHY,

Assistant O'ommz'ssz'oner of Patents.

Certificate of Correction Patent No. 2,508,064 May 16, 1950 CHARLES S.HAZARD It is hereby certified that errors appear in the printedspecification of the above numbered patent requiring correction asfollows:

Column 5, line 17, for ito read into; column 11, line 43, for the claimreference numeral 1 read 2;

and that the said Letters Patent should be read with these correctionstherein that the same may conform to the record of the case in thePatent Oflice.

Signed and sealed this 5th day of September, A. D. 1950.

THOMAS F. MURPHY,

Assistant Oommz'ssz'oner of Patents.

